Talking machine



B. R. SEABROOK TALKING MACHINE Original Filed Sept. 26, 1918 2 sheets-sheet 2 I u @H Hl Lf? l xmN'I'QR B. R. Seabrcok BV 35 y Fig. 3; -representsnn-e 40 .@parts, `the .section passing 45 Fig. 6i represents. ail

Patented Mar. 6,1923.

B AesTnn Ronns snABnooK, on inisnnwnxn, 'INDIANA-Assrenon, BY M nsnn f.:

nesten-in semis., To mamies;

` unirme iirncnmn.

'eppiication fue@ septe'mbe'ee 151s., semi n@ 4 73,31 64 have invented `c'ertalinl nen7 and useful llin-V provements in' .'lelking.Mecliines,L of Whicli the following is the spe'cication.

The invention relates to` improvements in talking` inziclijines endl the. principal jOlO @ct of. the. invention.` is to c'on'strnctf talking 1.0 inzich'ne having thesound boxtube inounted entirely independentof the. lionn, ."tl 1ereby providing an. air. opening itthe receiving end of the horn and to arrange such'- tlintair .can be admitted to the. horn eitherby forced l5 draft or otherwisethrough the opening provided.

A furtlier object-isytc construct the neck .of thehorn va speciefl manner andtogsuplyn supporting` post for the horn. att e neck.toreinforcev and s trengthenth'e' same.

lVitli the above objects, view the invention consists essentially. inthe arrangement andwnstruptoll, ffner@ hereinafter flier@ particularly described 'and' later.l pointed .out

the -ippended claims', reference being lhad t0 the iieeelnenyinsdtewnssj.ewehff .Y F ig. lreplesents a. venticzil .sectional View ing machine wh Vmy. inyention installed.

l 'Eign 2 repres'entslanienlalnged verticl sec- ,.enee@ ,indicate GorreSnoifld111sLv Parts. the several figures..

, 1 l represents the casefoi bodyof-,a cabinet. talking machine which .is -ittedmfitlij the .usual :hinged-iop 2 and is -plouided'-witli the customaryr record storage compartments' 3 'and 4 entered fro needle. l. i

'Ine-"parts Aabove described5-with the en"1v construction and for.' tliisressone fu` tone' erin opens.

k:Within the case, which pant itionsf what Inlghtbe termed. tlieA horn cli'einber 9. i

1i Here 1..- wishi it. no be' psrriwlerfynticed that; the partitions @s .xyell the bottoni 1"A Of .the Cese Stp aber@ the beek Offtheft Iand "butt: agziiiist4 ai' ver 1ca l cross"bord-IQ, which board fornisw'itli the i Walls ofthe cnbinet" an'iniet nir s heftfnl passagell leedingfroingpthe botto-ino tl'ie machine to vtli'erear end ofltlie' horn chjzinioei l2 represents the turn Y tition 7 sind carries .the usuel recmjl 13'. '14 1s theY Vsound box tubeltted Withthe 'soiled box "15j p ovidc'd VWith tire usuel styliis nary' ther description of tlnein isr not herein giyen ceptlon of the eilt .passage l1, ere: of .lordibei; sa@

wenn@ chine .Which `1s suitably vniotinted on the pali'- that ythe.

n eGtQn of the, sound' tube tion 7 is a' comino-n one,'siich"beijng by Wgyf :of ein outwardly'turnedfinge 161 swivelly attached to' the' receiving; collar krsecnr'ed drical`- tube 18,

f partition. V extending downwardly .into

Smindboxtibe'for.. tothe npperend of :i cylin permnnently mounted inthe of the case, I Vseci'i'i'ie permanently@"special low the; lowerr end off'f.

the tub bracket is formed v'from' .tipp

'plate or tWo .being, securelyv bolted indieste@ .et .22-

. The 'plete QlreceiVes the horn 23 which is fastenedfrrnlyn. asy A bycarlningg:to .theboardgfnnd `herlelbe observed y"clizit .the top v board.' loyenlingstlie 1 .af @per sop-'enf and spaced from the lower end of the tube 18. In this way I provide an air inlet opening 26 between the horn chamber and the interior of the horn.

In the present application I have shown the opening 26 as non adjustable but in this connection wish to state that in a co pending application Serial 287,582 filed May 3l, i918 I have shown it as adjustable so that the amountof air admitted vat this point can be controlled. 'Under ordinary conditions however the extent of the opening would be standardized so that the various sizes of machines would have openings to suit the condition existing.

The horn-23 has the inner end fastened, as above explained,ito the bracket and the outer or delivery end is mounted in the usual wayin the front of the casing. The neck of the horn is reinforced by making it thicker .than the delivery or iiariiig Aend and in this connection reference, ismade particularly to Figures 4, 5 and 6 of the drawings where it will be seen that the upper end at the bracket is, comparatively speaking, very thick and heavier at the front than at the back, and that below the bracket it gradually decreases in thickness on the front side but retains the same thickness at the back. rlhis formation is an important one as I find that by reinforcing'in this manner I greatly improve the value of the horn in so yfar as the delivery of thesound waves are concerned.

Directly beneath the' neck of the horn I place a reinforcing post 2,7 which vis permanently mounted on the partition 8 and has the upper end gouged out as indicated yat 28 to fit accurately the underside of the neck. This post forms ai solid support for the base of the neck at the point where the sound waves are being deflected to the flan ing end of the horn. In actual practise form' the post from a nr ber of wooden strips securely fastened together such as by nailing. This feature is not claimed herein but is'made the subject of a separate application, Serial `#498,387 hled Sept. 3, 1921. In order to close off the yback end of the horn chamber I have placed a vertical pai'- tition 30 across the chamber slightly in advance of the post and bracket and have cut the opening 3l in the partition to admit the horn, the opening being somewhat larger than the horn at this point. I then place a fabric indicated at 32 between the horn and l the side of the openinof to close off the spaces and'entirely separate the back ofthe chamber' from the front.

I have found in machines which I have constructed with an air shaft'that there is a natural air draft established from the iloor upwardly through the shaft to the passage 26, such being due However, if 't is desired to have a more or less strong draft one can place' an electric to the difference in levels l. The combination with the delivery end of the'sound box tube of atalking machinel and a horn having the receiving end thereof spaced from the delivery end ofthe sound box tube to provide anair inletv opening of an air shaft communicating with the inlet opening. i

2. The'combination with the delivery end of the sound box tube 'of a talking machine and a horn having the receivingl end vthereof surrounding but spaced from the delivery end of they tube to 'provide an air entrance betweenthe tube and the-horn at the Areceiving end of the horn, of an air shaft built in the body of the machine and communieating with the air passage 'and with exterior air.

3. In a talking machine, the combination with the horn chamber, a horn mounted in the chamber and a sound box tube entering the'chamber and extending into the re ceiving end of the horn, but spaced `therefrom to provide an annular air inlet passage surrounding said tube of an air shaft opening to the horn chamber.

4c. Ina talking machine, the combination with a case, a horn and a sound box tube,

of a bracket permanently secured to the back of the case and receiving and supporting the receiving end of the horn, an

upwardly flaring tube carried by the bracket and located at the receiving end of the horn and continuous therewith and an open ended stationary cylindrical tube continuous with the delivery end of the sound box tube and entering the flaring tube and of smaller diameter than the flaring tube'to provide 4an inlet passage to the horn and surrounding the cylindrical tube.

v5. In a talking machine, the combination withV a case, a horn and a soundvbox tube,

of a horizontally disposedv bracketpermanently secured to the backk of the'casevand receiving the receiving end of the horn, an

upwardly flaring tube permanently seated in the top side of the vbracketf'and having the lower end 'engaging the f horn f and' l with 1 an internal diameter equal tothe internal diameter of the receiving end of the horn and 4an open ended cylindricall tube continuous with the delivery end of the sound box tube and having the lower end thereof entering but spaced from the inner Wall ofthe 'flaring tube, therebyprovidingan annular inlet passage between the tubes.

' 6. In talking machines, a tone arm, and

an amplifying horn, the large end of they tone arm ending adjacent thesmall end. of

the horn in acoustic relation to each otherI but spaced apart without physical connection therebetween, whereby extraneous air is admitted to the horn at this point without encounterinor obstructions of any kind.

7. In talking machines, a tone arm, an

horn 1n a spaced apart, acoustlc relatlon to the tone arm forming an annular amplifying opening between them, a sound box o-n the tone arm adapted to produce sound waves -for transmission through the tone arm across the space into the horn, and means external of the horn for enc1rcl1ng such sound waves by an enclosing and commgllng column of vair at the end of the tone arm and delivering the combined sound waves and air to the horn. t

8. In talking machines, `a tone arm, a horn having its recelvmg end spaced apart from the tone arm but in acoustic. relation therewith, means for supporting said meinbers in operative relation to each other eX- traneously of the adjacent -ends of said horn and arm'whereby an unobstructed air-'pas'- sage is formed cat-ing air passage in connection with the former, and means for conveyingV air through such passages to thehorn."

9. In talking machines, a tone arm, a

between them, a communiy horn havingits receiving end inv acoustic relation though fromthe tone arm, ing saidfmembers physically disconnected 1 and means for supportin operative relationy to v eachother extraneously` of the adjacent ends p arm wherebyfan -unobvis formed between them.

-amplifying horn,

of the tube within the collar but spacedv apart from said lcollar to provide an obstructedair passage therebetween.y

l1. In talking machines, a tone arm, a

support for'its large end, a horn, asupport forpthe smallendof said horn, and means for' coordinating such `supports Aby'V-attaching g' them, to a member common to both so asv to f yleave the yarm vand horn in acoustic relation tember 1918.

BAGsrER ROADS sEABRooK.' Inthe presence offy y y S. ROXBURGH,

u X.KB.'WAKEF1ELD.

ytoeach otherwhile their adjacentends are 'Physically disconnected'. 7 Q Signed at WinnipegJ-his L2O day of Sep- 

